When you start a heart healthy eating plan, you might think that you need to cut out fat. However, recent studies have shown that including heart healthy unsaturated fats, such as those found in nuts, seeds, fatty fish, olive oil, and avocado, can actually help improve health measures like your cholesterol levels. A new study published in the Journal of the American Heart Association found that an avocado a day can lower cholesterol levels, even when eaten as part of the average American meal plan. [...]